new classes based on json descriptor

files/web/node_server/server.js

@@ -13,7 +13,7 @@ app.use(express.static('public'));
 
 // ---------- Redis subscriber ----------
 const redisClient = createClient({
-  url: 'redis://172.17.0.1:6379'
+  url: 'redis://192.168.37.1:6379'
 });
 redisClient.on('error', err => console.error('Redis error', err));
 
@@ -25,7 +25,7 @@ redisClient.on('error', err => console.error('Redis error', err));
   await sub.connect();
 // Subscribe to the channel that sends host stats
   await sub.subscribe(
-    ['host_stats'],
+    ['host_metrics'],
     (message, channel) => {            // <-- single handler
       let payload;
       try {
@@ -38,21 +38,6 @@ redisClient.on('error', err => console.error('Redis error', err));
       io.emit(channel, payload);
     }
   );
-// Subscribe to the channel that sends history stats
-  await sub.subscribe(
-    ['history_stats'],
-    (message, channel) => {
-      let payload;
-      try {
-        payload = JSON.parse(message); // message is a JSON string
-      } catch (e) {
-        console.error(`Failed to parse ${channel}`, e);
-        return;
-      }
-      io.emit(channel, payload);
-    }
-  );
-
 
   sub.on('error', err => console.error('Subscriber error', err));  
 })();